Some of the underlying logic here feels suspect to me. Sure, more people likely leads to more production of non-rival goods, but more people will also make rival goods more scarce and harder to come by. Sure, some rival goods will be replaced by non-rival goods, but it's hard to imagine eliminating them entirely. I don't really buy the idea that we can forever stay on this train of finding new/better/less-scarce reso…
Matters in the universe is a lot. Ditto the amount of energy. People may argue that unlimited growth is unsustainable, and I agree. But what people don't realize is just...how much resources there is and how much just sits there being wasted by being radiated and hitting inert rocks and gases. The problem is not resource availability(of which they are abundant and uselessly radiating out), or even engineering or econ…
there was an article (on HN even i think) some time ago that showed how big of an area of solar panels we would need to place in the sahara desert to solve the worlds energy problems. it was tiny compared to the whole area of the desert. sure, there is still a problem of distribution, but really, this energy problem should be solvable.
the space problem is a bit different. we probably don't want to turn the whole planet into high density housing, even if we could energy wise, but the only thing getting in the way of solving the problems we have is politics as in unwillingness to cooperate for the greater benefit of the world instead of for selfish reasons.